本篇文章给大家介绍一下用php实现文章分类的方法。有一定的参考价值，有需要的朋友可以参考一下，希望对大家有所帮助。
文章分类：同一个新闻 属于 多个菜单项 。比如某新闻既属于校园新闻又属于机构设置，那么点开校园新闻菜单项可以看到这篇文章，点开机构设置也可以看到这篇文章。
两个数据库 type放菜单项 每个菜单项的id唯一。dynamics放文章，文章的tag可以是多个type中的id
public function column($p=1){
$school_dynamicsModel = D('school_dynamics');
$school_typeModel =D('school_type');
$photoModel =D('photo');
$pid = isset($_REQUEST['pid']) ? $_REQUEST['pid'] : false;
$p = intval($p) > 0 ? $p : 1;
$pagesize = 20;
$offset = $pagesize * ($p - 1);
$count = $school_dynamicsModel->where("tag like '%' '$pid' '%' and is_delete = 0")->count();
$list_school = $school_dynamicsModel->where("tag like '%' '$pid' '%' and is_delete = 0")->order('time desc ')->limit($offset . ',' . $pagesize)->select();
$list = array();
foreach ($list_school as $p) {
if ($p['release_date']) {
$p['time'] = $p['release_date'];
}
else {
$p['time'] = date('Y-m-d H:i:s', $p['time']);
}
$list[] = $p;
}
$this->assign('list',$list);
$this->assign('page', $page);
$this->display();
}然后在页面上循环输出
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<p class="items-content">
<ul class="article">
<volist name="list" id="val">
<li>
<a href="/home/index/column_form.html?id={$val.id} ">
<span>{$val.title}</span><strong>{$val.time}</strong>
</a>
</li>
</volist>
</ul>
<p class="pages">
{$page}
</p>
</p>当你点击页面上的修改或者新增或者修改时，input把tag中的对应的菜单项读出来
public function edit($aid = 0){
$aid = intval($aid);
$school_dynamicsModel = D('school_dynamics');
$item = $school_dynamicsModel->where("id='$aid'")->find();
$conditions=$item['tag'];
$character_string=explode(',',$conditions);
for($cycle=0;$cycle<count($character_string);$cycle++) {
$record = D('school_type')->where("id ='$character_string[$cycle]'")->find();
$recordtag[]=$record['title'];
}
$tag=implode(',',$recordtag);
$item['tag']= $tag;
if (!$item) {
$this->error('参数错误！');
}
$option = M('school_type')->order('sort ASC')->select();
$option = $this->getMenu($option);
$this->assign('option', $option);
$this->assign('tag', $tag);
$this->assign('item', $item);
$this->display('form');
}
public function update(){
$id = isset($_REQUEST['id']) ? $_REQUEST['id'] : false;
$data['tag'] = $_POST['titietag'];
$tag_str = $data['tag'];
$array_tag = explode(',',$tag_str);
for ($cyclic_variable = 0; $cyclic_variable < count($array_tag); $cyclic_variable++) {
$result = D('school_type')->where("title='$array_tag[$cyclic_variable]'")->find();
$record_id[] = $result['id'];
}
$char = implode(',', $record_id);
$data['tag'] = $char;
if ($id) {
D('school_dynamics')->data($data)->where('id=' . $id)->save();
addlog('编辑内容，ID：' . $id);
$this->success('恭喜！内容编辑成功！', U('/qwadmin/homepage/index'));
} else {
$result = D('school_dynamics')->data($data)->add();
if ($result) {
addlog('新增内容，ID：' . $result['id']);
$this->success('恭喜！内容新增成功！', U('/qwadmin/homepage/index'));
} else {
$this->error('抱歉，未知错误！');
}
}
}网页代码
<div class="form-group">
<label class="col-sm-1 control-label no-padding-right" for="form-field-1">
文章类目： </label>
<div class="col-sm-9">
<select id="xinzen" name="xinzen" class="rcol-xs-10 col-sm-5">
<volist name="option" id="v">
<option value="{$v.id}"
>{$v['title']}</option>
<volist name="v.children" id="vv">
<option value="{$vv.id}"
>{$vv['title']}</option>
</volist>
</volist>
</select>
<span class="help-inline col-xs-12 col-sm-7">
<span class="middle">
<input type="button" value="新增" onclick="toTag()">
</span>
</span>
</div>
</div>
<script>
function toTag() {
var originally_input=$("#titletag").val();
$("#titletag").val("");
var add_new=$("#xinzen option:selected").text();
if (originally_input.indexOf(add_new, 0) == -1) {
if(originally_input==''){
originally_input = add_new;
}else{
originally_input += ',' + add_new;
}
$("#titletag").val(originally_input);
} else {
$("#titletag").val(originally_input);
}
}
</script>推荐学习：php视频教程
